摘要
对窄行平播密植条件下大豆的干物质积累规律的研究。结果表明 ,干物质在整个生育期内积累动态呈“S”型曲线。窄行处理的干物质积累量高于垄作对照 ,并在一定密度范围内随密度的增加而增加 ,但密度过大 ,干物质积累量反而下降。窄行平播密植在一定密度范围内能增产 ;显著地提高群体的叶面积指数和前期冠层光截获率 ,但并不改变各生理参数在整个生育期内的生育动态 。
Regulation of dry matter accumulation under the condition of narrow row solid-seeding was studied in this research.Results of this research showed that yields could be increased within some certain density range.Solid-seeding could increase the LAI of population and light interception rate significantly in the early growth period,but it didn't change the growth tendency of each physiological index during the whole growth period,and it also had a greater effect on the yields components.$$$$
出处
《东北农业大学学报》
CAS
CSCD
2000年第1期26-31,共6页
Journal of Northeast Agricultural University
关键词
窄行密植
光截获率
大豆
干物质积累
产量
narrow row solid-seeding
dry matter
canopy light interception rate
